Check
SiUS091133
145
Service Diagnosis
5.6
FourWay Valve Performance Check
Check No.13
5.7
Inverter Units Refrigerant System Check
Check No.14
(R15737)
N
O
YES
YES
N
O
T
u
rn the po
w
er off and then on
again.
Disconnect the fo
u
r-
w
ay
v
al
v
e coil
from the connector and check the
contin
u
ity.
Start heating operation.
*
Fo
u
r-
w
ay
v
al
v
e coil
Cooling / Dry :
N
o contin
u
ity
Heating : Contin
u
ity
Replace the o
u
tdoor
u
nit
PCB.
Replace the fo
u
r-
w
ay
v
al
v
e
coil.
Replace the fo
u
r-
w
ay
v
al
v
e.
Fo
u
r-
w
ay
v
al
v
e
coil resistance at 1000
~
2000
W
?
S
8
0
v
oltage at
220 - 240
V
AC
w
ith
compressor on? (Fig.
1)
(R11904)
(Fig. 1)
Voltage at S80
220 - 240 VAC
Time
Compressor
ON
Refrigerant system check
Check for refrigerant leakage.
See the service diagnosis on
refrigerant shortage (
U0
).
(R15833)
YES
NO
Reconnect the thermistor.
Replace the refrigerant.
Is the
discharge pipe
thermistor disconnected
from the holder?
